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Efficient Degradation of Organoarsenic by UV/Chlorine Treatment: Kinetics, Mechanism, Enhanced Arsenic Removal, and Cytotoxicity

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收录情况： ◇ SCIE ◇ EI ◇ 自然指数

作者：
Yang, T[a] * ; Wu, S[a] ; Liu, C[b] ; Liu, Y[c] ; Zhang, H[d] ; Cheng, H[d] ; Wang, L[d] ; Guo, L[a] ; Li, Y[a] ; Liu, M[a] ; Ma, J[d] ;
机构： [a]School of Biotechnology and Health Science, Wuyi University, Jiangmen, 529020, China [b]Department of Cardiovascular Medicine, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou, 510120, China [c]Technology RandD Center for Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China [d]State Key Laboratory of Urban Water Resource and Environment, School of Environmental, Harbin Institute of Technology, Harbin, 150090, China
出处：
DOI： 10.1021/acs.est.0c05084
ISSN：

摘要：
Roxarsone (ROX) has been widely used as an organoarsenic additive in animal feeding operations and poses a risk to the environment. Here, we first report the efficient degradation of ROX by UV/chlorine, where the kinetics, removal of total arsenic (As), and cytotoxicity were investigated. The kinetics study presented that reactive chlorine species (RCS) and HO• were the dominant species to react with ROX. Furthermore, the degradation rate of ROX can reach the maximum value at pH 7.5 due to the formation of more RCS. The degradation of ROX was affected by the amount of chlorine, pH, and water matrix. Through product analysis and Gauss theoretical calculation, two possible ROX degradation pathways were proposed. The free radicals attacked the As-C bond of ROX and resulted in releasing arsenate (As(V)). It was the reason that for an enhancement of the removal of total As by ferrous appeared after UV/chlorine, and over 98% of the total As was removed. In addition, cytotoxicity studies indicated that the cytotoxicity significantly enhanced during the degradation of ROX by UV/chlorine. However, by combination of UV/chlorine and adsorption, cytotoxicity can be greatly eliminated, probably due to the removal of As(V) and chlorinated products. These results further demonstrated that UV/chlorine treatment could be an effective method for the control of the potential environmental risks posed by organoarsenic. ©

基金：
This work was financially supported by the Major Science and Technology Program for Water Pollution Control and Treatment (2017ZX07201003-03), research project of High-level Talents of Wuyi University (2019AL024), Characteristic Innovation Project of Guangdong Province (No. 2015KTSCX 142), and Functional Nanocatalytic Material Design and Decontamination Technology Project (GX18A024), State Key Laboratory of Urban Water Resource and Environment (Harbin Institute of Technology) (No. 2019DX05), and Guangdong Provincial Department of Education Youth Innovation Talents Project (Natural Science) (2018KQNCX268).
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外文
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中科院(CAS)分区：
出版当年[2020]版：
大类 | 1 区 环境科学与生态学
小类 | 1 区 环境科学 2 区 工程：环境
最新[2025]版：
大类 | 1 区 环境科学与生态学
小类 | 1 区 工程：环境 1 区 环境科学
JCR分区：
出版当年[2019]版：
Q1 ENVIRONMENTAL SCIENCES Q1 ENGINEERING, ENVIRONMENTAL
最新[2023]版：
Q1 ENGINEERING, ENVIRONMENTAL Q1 ENVIRONMENTAL SCIENCES

影响因子： 最新[2023版] 最新五年平均 出版当年[2019版] 出版当年五年平均 出版前一年[2018版] 出版后一年[2020版]

第一作者：
第一作者机构： [a]School of Biotechnology and Health Science, Wuyi University, Jiangmen, 529020, China
推荐引用方式(GB/T 7714)：
Yang T,Wu S,Liu C,et al.Efficient Degradation of Organoarsenic by UV/Chlorine Treatment: Kinetics, Mechanism, Enhanced Arsenic Removal, and Cytotoxicity[J].ENVIRONMENTAL SCIENCE & TECHNOLOGY.2021,55(3):2037-2047.doi:10.1021/acs.est.0c05084.
APA：
Yang, T,Wu, S,Liu, C,Liu, Y,Zhang, H...&Ma, J.(2021).Efficient Degradation of Organoarsenic by UV/Chlorine Treatment: Kinetics, Mechanism, Enhanced Arsenic Removal, and Cytotoxicity.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55,(3)
MLA：
Yang, T,et al."Efficient Degradation of Organoarsenic by UV/Chlorine Treatment: Kinetics, Mechanism, Enhanced Arsenic Removal, and Cytotoxicity".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55..3(2021):2037-2047

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